Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Proposal of Guideline for Judgment of Adjacent Level on Adjacent Construction of Existing Tunnels
Kazuhide YASHIROKeisuke SHIMAMOTOYoshiyuki KOJIMA
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2008 Volume 49 Issue 2 Pages 79-84

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Abstract

We performed an anecdotal survey and simulation analysis to clarify the deformation behavior of existing tunnels resulting from adjacent construction of embankments or cuttings. Case studies showed relationships between the deformation modulus of the ground, the geometrical shape of the adjacent construction and their influence on existing tunnels. We confirmed the validity of these relationships through parametric analysis of existing tunnels. Based on the results, we proposed adequate guidelines that are more applicable to construction adjacent to existing tunnels in consideration of the ground stiffness and the geometrical shape of the embankment or cutting.

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© 2008 by Railway Technical Research Institute
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